Sound gathering device for voiceprint monitoring and preparation method
US12230242B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jul 20, 2023 |
| Grant date | Feb 18, 2025 |
| Priority date | — |
| Expiry date | Jul 20, 2043 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG10K13/00
- WIPO fieldOther consumer goods
- WIPO sectorOther fields
Abstract
Provided are a sound gathering device for voiceprint monitoring and a preparation method. The sound gathering device is a cone structure and includes a front end portion (1) and a rear end portion (2), the front end portion (1) is trumpet-shaped, an inner wall surface of the front end portion (1) is present a pattern array of a microstructure (3), and the microstructure (3) presenting the pattern array is formed through laser etching. A sound wave frequency monitored by the sound gathering device is 50 Hz˜10 kHz, and a sound wave enters the sound gathering device from an entrance of the front end portion (1), is reflected through the pattern array of the microstructure (3) on the inner wall surface of the front end portion (1), and is transmitted from an exit of the rear end portion (2), and a sound pressure of the exit of the rear end portion (2) is 4 times˜8 times a sound pressure of the entrance of the front end portion (1).
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.